Wrench



W. R. PHILLIPS, SR

WRENCH Filed Nov. 1951 Sept. 6, 1932.

In venfar. wimmwawfa.

Patented Sept. 6, 1932 UNITED STATES WILL AM nrnrnrirrs, $3., or TLATQGEORG A WRENCH Application filed November 4, 1931. Serial No. 572,368.

This invention relates to wrenches andis concerned with that class ofwrenches known as the monkey wrench, and the main object of theinvention is to construct a wrench that I 5 is susceptible to quickadjustment being rigidly sustained in position while in operation; also,as quickly and easily released from such engagement; also, a wrench thatis durable economical and one whose parts may 10 be easily removed andreplaced, should any become disabled or broken.

A further object is to provide a movable jaw sustained on an annulartoothed shank having a fixed jaw through the medium of an 15 annulartoothed threaded nut attached to a headed screw pin in connection withan annular toothed prism containing an annular cavity; said cavitycontainin a closed spiral spring (capable of longitudlnal expansion)ggsaid pin nut and prism acting together tobring about a closerconnection of the jaws after being locked on the shank.

A further object is to provide strength, durability and absoluteimmobility of jaws 25 while in operation.

WVith the above and other objects in View the invention consists in theconstruction, combination and arrangement of parts set forth in thefollowing specification and fall e. ing within the scope of the appendedclaims. In the drawing Figure 1 is a side elevation of a wrench (with aportion cut away) constructed in accordance with the present invention.Figure 2 is a transverse sectional view on line 22 of Figure 1, Figure 3is a perspective view of an annular toothed threaded nut having a leafshaped lever attachment. Figure 4 is a side View of an annular toothedprism containing a spiral spring in an annular cavity.

Referring to the drawing in detail, 1 designates the wrench in itsentirety (excepting.

its cut away portion). The said wrench includes a stationary jaw 2 whichis formed with a right angular shank 3 (being tapered and threaded toreceive awooden handle) and on which a jaw 4 is mounted for slidablemovement upon the shank 3. The shank has its upper face at a distancefrom its head 2, 5o provided for a suitable distance with transreadilyslide upon the shank 3, of the jaw 2 versely arranged annular teeth 5.Movable' jaw 4 includesa head 6,to which isintegrally attached acarriage 7 The carriage and head have their lower portions provided with.a

rectangularopening, so that the jaw 4 may The carriage above itslongitudinal shank res ceiving. passage is provided with a transverseopening 8 which communicates with said longitudinal passage. The innertransverse. wall provided by 8, that is the wall adjacent head 6 of 'thej aw 4 is formed with an annu lar longitudinally extending depression orbore 9, while the outer wall 10 provided between the opening and the endof the carriage is formed with a longitudinally extending annularpassage 11. The passage and bore are adapted to receive the nonthreaded'portions, 12 and 13 of the headed screw pin: member 14. The threads 15of said screw pin are adapted to engage with the threaded bore 16 ofthenut member Figure 8. This nut isiannularon the upper andlower out- 1sides and toothed as indicated at 18, andr19.

to conform to teeth 5 of shank 3, and teeth 17 (see Figure 4 and 1) andto co-act with screw pin 14, both to lock jaw 4 on shank 3 and to securea closer adj ustment between stationary jaw 2, and sliding jaw 4 in anyposition along the shank. This.is-acconiplished when the leaf-leverFigures 2 and 3 is pressed into. the position shown in solid lines inFigure 2. The dotted lines in Figure 2 shows the position of lever whenopen and ready to be placed in any other position. It will be noticed inthe: drawing Figures 2 and 3 that the annular shape ofthe teeth in thenut member Figure 3 are not an exact circle and that the outer threadsor teeth 18 and 19 are considerably drawn in as they terminate in thesmooth out 90 side surface of the vertical walls of Figures 2 and 3, 21.This is done to secure a properv meshing of the teeth or threads ineffecting. acoupling. The top of leaf lever 20 has a, tongue and a latch22 is grooved to conform thereto. A screw pin 14 is swivelly secured inthe annular cavity 9 by a machine screw 24 engaging in groove 23 onthenonthreaded portion of said screw pin: That Illlt Figure 3., Y 1 J Inthe operation of the wrench on rotation of the pin 14 in one directionthe nut member will remain stationary while drawing carriage 7 towardstationary jaw 2, and at the same time prism Figure 4 will recede fromjaw 6 projecting through wall 10 provided by opening 8 see dotted lines27. By reversing the action of screw pin, release is likewiseaccomplished then the spiral spring 28 Figure 4 being out stretchedduring the former operation likewise closes with the latter and re--turns the prism member Figure 4 back to its normal position, this springbeing'incased in an annular cavity or bore in the end 29 of the prismFigure 4, and hooking in a like cavity bored in wall provided by opening.8 in aw 6 secured by amachine screw 30 in each end. The latch 22 isalso secured by a machine screw 31 and spring washer to jaw 7.

It will not be amiss to mention here that should the spiral spring 28 orlatch 22 or both at the same time become broken, it will not prevent theeificient holding and operation of the wrench; but only hampers theresetting and retention of sliding jaw 7 in position. Though clumsilyand awkwardly the wrench may continue in eflicient operation .until saidparts are replaced.

From the above description, taken in connection with the accompanyingdrawing, the simplicity of the device as well as advantages thereof willit is thought be quite obvious to those skilled in this line of endeavorwithout further description.

I claim:

1. A wrench of the class set forth a stationary jaw on an angular shankprovided with annular threads or teeth on its upper side facing amovable jaw arranged upon the shank, said movable jaw including a headand carriage having a transverse opening, a headed and threaded screwpin member arranged in the carriage and positioned cen trally,transversely and just slightly above the toothed shank in the opening ofthe carriage longitudinally in a suitable position for threadedlyengaging in a threaded nut, said nut also having an annularly shapedtoothed top and bottom for engaging in like teeth on the shank below anda longitudinally slidable prism above containing also like teeth. tosecure the said jaw in an absolute immovable position on shank.

2. A wrench of the class set forth a sta tionary jaw on an angular shankprovided with annular threads or teeth on its upper side facing amovable jaw, arranged upon the shank, said movable jaw including a headand carriage having a transverse opening, a headed and threaded screwpin member arranged in the carriage and positioned centrally,transversely and just slightly above the toothed shank in the opening ofthe carriage longitudinally in a suitable position for threadedlyengaging in a threaded nut, said said carriage to engage one end of aleaf lever on said nut tosecurely lock the same in operative position.

.In testimony whereof I do this day aifix my signature Apr. 19th 1932. v

V 7 WILLIAM RUSSELL PHILLIPS, Sr.

